Parts for your 2020 Holden Astra-Oil seals

2020 Holden Astra Oil Seals

Oil seals are absolutely used on the 2020 Holden Astra. Factory service information for the Astra K/BK (MY20), along with GM/ACDelco parts catalogues and the Opel/GM EPC, specify multiple engine and transaxle oil seals for this model. That includes crankshaft front and rear (rear main) seals, camshaft seals, valve stem seals, and transaxle output (drive shaft) seals. So oil seals are relevant to this vehicle’s servicing and longevity.

What do they do? In short, oil seals keep engine and gearbox oil where it should be—inside—and dirt and moisture where they shouldn’t be—outside. On the Astra’s turbo-petrol engines, correct sealing is vital to maintain oil pressure for bearings, keep the timing gear clean, and prevent leaks that can land on belts, clutches, or hot exhaust parts.

• Crankshaft front seal: Sits behind the crank pulley/timing cover to contain engine oil at the front of the motor.
• Rear main seal: Lives at the gearbox end of the crank